Nanobiosensor for Diclofop Detection Based on Chemically Modified AFM Probes

Modeling the coverage of an AFM tip by enzymes and its application in nanobiosensors

“…For full coverage of the tip, N = 6, the predicted force agrees with the experimentally measured average force from Ref. [26]. These values are highlighted in bold in the third line.…”

“…The agreement with the experimental data is remarkable. For a fully covered AFM tip, Bueno et al [26] measured forces varying from 3 to 8 nN, leading to a histogram of forces which most probable value is (6.1 ± 2.0) nN. These values are highlighted in line 3 of Table 2.…”

“…As the hydration energy is small and electrostatic repulsion can be neglected, we assume that the AFM tip surface is uniformly covered by ACC dimers represented by rigid polyhedrons. The spherical AFM tip area A is calculated using A = 2 ıR, where R is the radius given by the manufacturer [26] and ı is a parameter depending on the substrate geometry as indicated in Fig. 3.…”

Molecular dynamics simulation of potentiometric sensor response: the effect of biomolecules, surface morphology and surface charge

“…The CHARMM forcefield used in this work is well suited to the incorporation of organic, solvated molecules like APTES, and has been used to model APTES in the literature. 108 DNA was added to the crystalline silica system with an intrinsic silanolate surface charge density of −0.083 C m −2 and constrained near the surface and the electric field response for this DNA system is shown in the blue bar of Fig. 4.…”

Aplicações de química teórica no estudo de materiais: métodos in silico para nanomateriais

“…17 É nesse contexto que as técnicas de MMC tiveram seu desenvolvimento estimulado. 18 13 Da Silva et al (2013Silva et al ( , 2014, Deda et al (2013), Castro Bueno et al (2014). 14 Butt et al (1990).…”